Whether trim textures can be placed in atlases?

oleg

There is a tile texture that repeats on UV
And if the tile texture is placed in satin, the UV grid will fall on other materials and the texture will not be tile
Is there any way to specify which tile size and on which grid it should be repeated?

oleg

The issue is resolved.
I learned that in other real-time engines tile textures are not combined in atlases, and instead of them 2 textures of normal maps, 'usual' and 'tile'(detail normalmap) become.

oleg

I learned that the technology I need is called 'UDIM'

https://www.fxguide.com/fxfeatured/udim-uv-mapping/
https://learn.foundry.com/modo/901/content/help/pages/uving/udim_workflow.html

@hgy29 Is it difficult to make UDIM support in Gideros?

hgy29

From what I understand from it, it is nearly impossible as the shader would need an indeterminate number of textures as input. The only way to make it usable is to split your mesh before hand into submeshes using one texture. Gideros could do it, but most probably your 3D tool can also do it during model export

oleg

hgy29 said:

From what I understand from it, it is nearly impossible as the shader would need an indeterminate number of textures as input. The only way to make it usable is to split your mesh before hand into submeshes using one texture. Gideros could do it, but most probably your 3D tool can also do it during model export

In the shader there are 3 textures
1-color texture,
2- normalmap
3- normalmap tile

Tile texture is mixed with non-tile texture and superimposed on the whole object.

oleg